PCH_TRANSCONF
#define LPT_TRANSCONF PCH_TRANSCONF(PIPE_A) /* lpt has only one transcoder */
val = intel_de_read(display, PCH_TRANSCONF(pipe));
reg = PCH_TRANSCONF(pipe);
reg = PCH_TRANSCONF(pipe);
if ((intel_de_read(display, PCH_TRANSCONF(pipe)) & TRANS_ENABLE) == 0)